9th Meeting on Hot Subdwarfs and Related Objects

Introduction to Session 4

Suzanna Randall

Session 4: Hot subdwarfs and their pulsations

Chair: Somaye Soomandar

› A Pulsation Mechanism for He-rich sdOBV stars - Tiara Battich, Instituto de Astrofísica de La Plata 09:10-09:30 (20min)

› Asteroseismology of Tidally Distorted sdB Stars - Holly Preece, Institute of Astronomy, University of Cambridge & Armagh Observatory and Planetarium 09:30-09:50 (20min)

› Musical Orchestra of sub dwarf B stars in NGC6791 - Sachu Sanjayan, Copernicus Astronomical Center of the Polish Academy of Sciences, Pedagogical University of Krakow 09:50-10:10 (20min)

› On a mode geometry in a sample of subdwarf B stars observed by TESS - Sumanta Sahoo, Copernicus Astronomical Center of the Polish Academy of Sciences, Pedagogical University of Krakow 10:10-10:30 (20min)

Coffee break

Session 4: Hot subdwarfs and their pulsations

Chair: Benjamin Fernando

› Gravity (g) mode pulsators from the TESS mission - Murat Uzundag, University of Valparaiso 11:00-11:20 (20min)

› Kepler view on sdB pulsators: amplitude and frequency variations of oscillation modes - Weikai Zong, Beijing Normal University 11:20-11:40 (20min)

› Pulsation Timing Analysis for a Pulsating Subdwarf B star, EC 05217-3914 - Tomomi Otani, Embry-Riddle Aeronautical University 11:40-12:00 (20min)

› HD 4539: a bright single sdB star showing high-degree g-modes with l up to 12 - Roberto Silvotti, INAF - Osservatorio Astrofisico di Torino 12:00-12:20 (20min)

Discussion closing Session 4

Chaired by Dave Kilkenny & Andy Baran

Lunch break

Introduction to Session 5

Simon Jeffery

Session 5: Evolved compact stars as laboratories for stellar physics

Chair: Matti Dorsh

› Recent results on the peculiar sdO binary HD49798 - Sandro Mereghetti, INAF, IASF-Milano 14:10-14:30 (20min)

› S-process nucleosynthesis during the formation of He-rich hot subdwarfs - Tiara Battich, Instituto de Astrofísica de La Plata, Universidad Nacional de La Plata, CONICET 14:30-14:50 (20min)

› Modern evolutionary modelling of sdB stars using the MESA code - Jakub Ostrowski, Pedagogical University of Krakow 14:50-15:10 (20min)

› Atomic Diffusion in Chemically Peculiar Hot Subdwarfs - Conor Byrne, Armagh Observatory and Planetarium, Trinity College Dublin 15:10-15:30 (20min)

Coffee break

Session 5: Evolved compact stars as laboratories for stellar physics

Chair: Steven Hämmerich

› Super Metal-Rich Hot Subdwarfs as Tools for Atomic Physics - Alexander Landstorfer, University of Tübingen 16:00-16:20 (20min)

› The formation of a CONe white dwarf through super AGB evolution - Yan Li, Yunnan Observatories, Chinese Academy of Sciences 16:20-16:40 (20min)

Discussion closing Session 5

Chaired by Simon Jeffery & Josiah Schwab

Adjourn / Poster viewing

Conference dinner